baber/WOPTO huggingface dataset:
Patent GB-847079-A (GB)
Title: Improvements relating to shock-absorbing devices
Inventor: HEATH HUBERT HENRY
IPC: G21C7/20
Filed: 1956-08-28
Abstract: 847,079. Nuclear reactor control rods. ENGLISH ELECTRIC CO. Ltd. Aug. 26, 1957 [Aug. 28, 1956], No. 26331/56. Class 39(4). [Also in Group XXXIV] In a shock-absorbing device suitable for a control rod in a nuclear reactor, a tubular adaptor 11 which is screwed into the lower end of the control rod 12 is also associated with a tubular housing consisting of two telescopic sections 13, 14 normally held against relative axial movement by grub screws 15. Mounted in the housing is a plunger 18 having a multistart screw thread 19 ; the upper end of the thread normally abutting against an internal shoulder 20 in section 13. If the control rod 12 is suddenly dropped so that the plunger 18 strikes the structure supporting the core of the reactor, the kinetic energy of the control rod and shock-absorber assembly will tend to cause the housing to move downwards relative to the plunger 18 and, assuming the kinetic energy is sufficient, the thread 19 on the plunger will be stripped against shoulder 20 in section 13 to absorb kinetic energy at a substantially constant rate. Should the control rod not be brought to rest before the flange 24 of the plunger engages the lower end of section 14, the grub screws 15 will shear to allow the section 13 to telescope into the section 14, thereby allowing a further length of thread to be stripped against the shoulder 20. The device could, alternatively, be mounted at the bottom of the control rod channel.
Patent GB-616439-A (GB)
Title: Improvements in or relating to high temperature electric furnaces
IPC: H05B3/64
Filed: 1946-09-02
Abstract: 616,439. Electric furnaces. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Sept. 2, 1946, No. 26337. Convention date, Sept. 8, 1945. [Class 39 (iii)] [Also in Group XXVIII] An electric furnace comprising a cup shaped heating element of graphite surrounded on all sides by heat radiation shields, is enclosed in a vacuumtight metallic casing connected to a vacuum pump. The graphite heating element comprises a thick base 112, and a thin vertical cylindrical wall 114 formed with a plurality of narrow horizontal perforations 118 providing a tortuous current circuit. Heat losses are minimised by spaced apart heat radiation shields 124, 126, 128 below the heating element, by spaced apart cylindrically shaped shields 142, 134 around the heating element and by removable shields 146 arranged horizontally above the heating element, the latter shields having openings for the escape of gases and for observing the charge through a peep-tube 152 in the top plate 12 of the metallic casing. A central conductor 20 is electrically connected to the base of the heating element whilst other conductors 22, 24, &c., spaced around the central conductor 20 and insulated from the metallic casing, are electrically connected in parallel to the upper periphery of the heating element. Each conductor comprises a hollow water cooled metal rod 76, surmounted by a graphite member 38 recessed to accommodate a round graphite rod 42, 96 electrically connected to the heating element. Apertures are made in the heat radiation shields to accommodate the graphite rods. Water cooled coils 164 are arranged around and at the ends of the metallic casing.
Patent GB-694171-A (GB)
Title: Improvements in or relating to electric inspection lamps
IPC: F21V19/00
Filed: 1949-10-14
Abstract: 694,171. Lamp holders. NORFOLK, C. L., and GODFREY, E. W. Oct. 12, 1950 [Oct. 14, 1949], No. 26454/49. Class 38 (i). [Also in Group XI] The bulb holder of an inspection lamp (see Group XI) comprises a metal plate 8<SP>1</SP> with a central aperture 9 for the cap of the bulb and a cross-bar 12 of insulating material slidably mounted on pins 13 depending from the plate. Springs 14 urge the cross-bar upwardly so that the head of a bolt 18 serving as an electrical contact and secured to the crossbar engages the central contact of the cap of the bulb. The cap either screws into the plate or has pins which pass through notches in the plate and engage the underside thereof. The plate 8<SP>1</SP> is suspended by radial coiled springs 10 from a wire ring 7 which is sprung into a groove in the bowl-shaped end of the handle of the lamp.
Patent GB-1162221-A (GB)
Title: Electrically-Heated Pads or Blankets
Inventor: WILLIAMS FREDERICK REGINALD
IPC: H05B3/34
Filed: 1965-06-23
Abstract: 1,162,221. Electric blankets. DREAMLAND ELECTRICAL APPLIANCES Ltd. 16 Sept., 1966 [23 June, 1965], No. 26616/65. Heading H5H. An electrically heated pad or blanket has two heating elements 8, 10 defining two separate electrical circuits, each circuit being connected to a switch adapted to be connected to an electricity supply and having at least three operating positions so that the two circuits can be connected to the supply either singly or in series or in parallel. The length of one 10 of the heating elements 8, 10 is greater than the other, and the elements are disposed in substantially parallel U-shaped runs with a part of the runs of the longer element disposed in a region of the pad or blanket not containing the runs of the other element. The resistivities of the elements 8, 10 are such that when placed in parallel there is an even heat distribution over the pad or blanket, when placed in series there is an even heat distribution of less heat and when one circuit only is connected to the supply, one area of the pad or blanket is heated at a different temperature to the remaining area of the pad or blanket.
Patent GB-616802-A (GB)
Title: Improvements in and relating to stern gland arrangements for the propeller shafts of ships
IPC: F16J15/00
Filed: 1945-10-11
Abstract: 616,802. Stuffing-boxes. WERKSPOOR N. V. Oct. 11, 1945, No. 26630. Convention date, April 19, 1943. [Class 122 (v)] A stuffing-box for a ship's propeller shaft consisting of a box 6 containing the packing 7 is mounted inside a slide piece 10, sliding in the stern structure 4. When it is desired to renew the packing 7, the slide 10 is forced towards the propeller by the bolts 20, the packing 11 forming a seal against the propeller shaft flange 25.
Patent GB-325249-A (GB)
Title: Improvements in heat transferring devices
IPC: F28F1/30
Filed: 1928-09-17
Abstract: 325,249. Sturtevant Engineering Co., Ltd., and Burrow, W. C. Sept. 17, 1928. Gills for tubes. - Gills are closely packed on a tube 5 and are formed of separate plates 1 having shallow radial corrugations or undulations, the curvature of one gill conforming with, and being parallel to that of adjacent gills so that air or other fluid passing between the parallel edges and the curved surfaces of the gills will be given an undulating motion. In an example four or five corrugations only are given to each gill. Praferably the gills have a shoulder round the central hole, and they are secured by expanding the tyre. Specification 3026/05 is referred to.
Patent GB-704960-A (GB)
Title: Improvements to electric induction furnaces
Inventor: KEMPSON HARRY THOMAS
IPC: H05B6/28
Filed: 1950-11-01
Abstract: 704,960. Induction furnaces; alarms. WIGGIN & CO., Ltd., H. Nov. 1, 1951 [Nov. 1, 1950], No. 26692/50. Class 39 (3) An induction furnace has a safety device comprising two sets of conductors 12, 14 incorporated in a flexible screen of heatresisting material mounted in the furnace wall inside the induction coil, the two sets of conductors being normally insulated from one another and from the coil, the conductors being so arranged that molten metal leaking through the wall will, before reaching the coil, form a bridge between a conductor 12 and a conductor 14, thereby closing a circuit to actuate an alarm and preferably cut off current supply to the coil. The conductors comprise parallel vertical wires 12, 14 woven into a flexible screen with asbestos thread 16 and connected alternately to bus bars 17. 18. The screen is insulated from the coil by a ring of mica. When molten metal bridges the wires 12, 14 a circuit is completed through a transformer 20 and the alarm 22 is energized. The circuit includes a choke 24 and condenser 26 so that it is not energized by the H.F. current.
Patent GB-266413-A (GB)
Title: Improvements in and connected with the supercharging of internal combustion engines
IPC: F02B39/12
Filed: 1925-10-24
Abstract: 266,413. Brown, A. Hall-. Oct. 24, 1925. Pumps.-A blower for supplying air is controlled by means dependent on the pressure in the induction pipe and which interrupt the drive of the blower, regulate its speed or control a bye-pass in the outlet pipe. The induction pipe is connected to a cylinder 4 having a piston 5 connected to the driving pulley 3 of the radiator fan 2 around which is mounted a blower 1 driven from the pulley 3. As the suction varies friction surfaces 3<a> on the pulley are forced by the spring 7 either into or out of engagement with the hub of the blower 1. In a modification, the pressure in the induction pipe acts on a piston 8 connected to a two-way valve 13 controlling the inlet and outlet of the blower and a relief valve 14 which is opened when the blower outlet is closed. In a further modification the piston is connected to a change-speed gear for the blower.
Patent GB-468591-A (GB)
Title: Improvements in or relating to identification seals for animals
IPC: A01K11/00
Filed: 1936-10-01
Abstract: 468,591. Seals. PERQUIN, J. J. Oct. I, 1936, No. 26697. [Class 146 (ii)] In an identification sea for animals comprising one member having two parallel sleeves 1, 2 pro jecting from a plate 3, and a second member consisting of a plate 5 provided with openings 10, 11 through which the ends of the sleeves are passed to be beaded on the outer side of the plate 5, the plate 3 has its outer edges tangential to the peripheral edges of the sleeves 1, 2 whereby there are no projecting flanges around the sleeves which could be caught on wire fencework or the like when the seal is on the ear of an animal.
Patent GB-439438-A (GB)
Title: Improvements relating to control arrangements for trolley buses
IPC: B60L11/18
Filed: 1934-09-18
Abstract: 439,438. Control of motors. RAMSDEN, H. K., 26, Ashlands, Ashton-on-Mersey, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Sept. 18, 1934, No. 26833. [Class 38 (iii)] A change-over switch RS is adapted to connect a trolley-bus motor A either to the trolley wire or to a battery B1, B2, carried on the vehicle, and means are provided whereby the connections between the change-over switch and the trolley wire may be established only when the change-over switch is in the trolleywire position, a battery switch BS also being provided which can be operated to connect the battery to the change-over switch only when the change-over switch is in a battery connecting position. Thus, when the motor is supplied from the trolley the battery is separated from the motor circuit at each pole by the open contacts of two switches in series. The change-over switch RS may be constituted by the reversing switch modified to have forward and reverse positions both for trolley and battery connections. The reversing and battery switches may be operated by a common removable handle which cannot be removed from the reversing switch when the latter occupies a trolley position, and can only be removed from the battery switch when the battery is disconnected from the motor circuit. The circuit from the trolley to the reversing switch may pass through contactors LS1, LS2, controlled by a relay de-energized when the master controller is in an off position.. The master controller is then interlocked with the reversing switch so that it can be moved from the off position only when the reversing switch is in a trolley position, and movement of the reversing switch is possible only when the master controller is in the off position. The battery sections B1, B2 may be connected in series for supplying the motors, and when the switch BS disconnects them from the motor circuit it may connect them in parallel for charging from a generator G. The battery disconnecting switches may consist of contactors electrically interlocked to be de-energized when the line contactors are closed. When the motor is supplied from the battery it is controlled simply by a contactor FS controlled by a foot operated switch FR.
Patent GB-747108-A (GB)
Title: Improvements in and relating to the production of wood pulp
Inventor: AKHTAR MOHD
IPC: D21C3/22
Filed: 1953-10-01
Abstract: <PICT:0747108/IV(a)/1> <PICT:0747108/IV(a)/2> Wood pulp of reproducible quality is obtained by cooking wood chips with aqueous bisulphite solution containing excess sulphur dioxide whilst measuring the electrical conductance of the liquor, observing the time when minimum conductance is reached and continuing the cooling for a certain period after such time, as determined by a previous trial run.  The process is based on the observation that, notwithstanding normal variations in the composition of the initial liquor, in liquor/wood ratio and in maximum pressure, the quality of the pulp depends on the period for which cooking is continued beyond the point when minimum electrical conductance of the liquor is passed, this being constant for any given wood and given cooking temperature.  Fig. 3 is a flow diagram of a suitable apparatus, comprising a digester 1 and continuously operating pump 2.  In a by-pass line 3 the liquor flows through a glass tube wherein its electrical conductance is measured.  Fig. 4 shows a suitable measuring apparatus, wherein the liquor flows through a capillary glass tube 4 having two gold-plated pieces of copper 5, 6 wrapped round the tube, acting as electrodes.  Electrode 5 is connected through condenser 8 to a source 7 of radio-frequency oscillations and the current passing through to electrode 6 is rectified and measured by an automatically recording microammeter 9.  The slide 10 and shunt 11 are used to apply bias to the microammeter to vary the scale readings.  Examples are given illustrating the constancy of physical characteristics of pulps produced under varying conditions of liquor composition, liquor/wood ratio and maximum pressure when the same temperature cycle is followed and cooking is continued for the same period after the point of minimum electrical conductance of the cooking liquor is reached.  The liquors used were magnesium bisulphite solution and calcium bisulphite solution; each containing excess sulphur dioxide.
Patent GB-339341-A (GB)
Title: Improvements in or relating to thermostatically controlled valve devices
IPC: G05D23/02
Filed: 1929-09-04
Abstract: 339,341. Robinson, H. N., Wortley, G. W., and Main, Ltd., R. & A. Sept. 4, 1929. Thermostats. - A thermostat of the kind in which the valve member 6 has a tappet 7 adjustably screwed through it has stops 13 and 5 on the tappet and valve meber respectively for limiting the relative rotation of these parts. One end of the tappet extends through a removable cover 23 and is provided with a screw-driver slot 12 for operation, while the other end is.provided with a wear-resisting surface 28 engaging a rod of non- expansible metal 2. The rod 2 engages the closed end of a brass tube 3 adjustably screwed to the casing 5 and secured by a nut 4 and grub screw 11. The face of the cover 23 is provided with an indicating scale 22 co-operating with the slot in the tappet, and a removable cap 24 is adapted to be screwed onto the cover to enclose the end of the tappet. Secification 268,195 is referred to.
Patent GB-1433023-A (GB)
Title: Header tank for multi-tubbe heat exchanger
IPC: F28F21/06
Filed: 1973-06-06
Abstract: 1433023 Headers for tubular heat exchangers MARSTON RADIATORS Ltd 3 June 1974 [6 June 1973] 26987/73 Heading F4S A generally rectangular header box 15, Fig. 2, or 25, Fig. 4, for use in a multitube heat exchanger is moulded of plastics material and has around its open side (normally closed by a tube plate 13) an outwardly extending peripheral flange 17, Fig. 2, or 30, Fig. 4, with corners 31 spaced apart along its length, the flange surface 19 facing away from the base of the header box being, in a direction along its length, of a generally concave configuration. This configuration, which is to ensure a satisfactory seal between the header box and the tube plate, may extend along the whole length of the flange between adjacent corners 31 thereof, e.g. as in Fig. 4,; or it may be local, e.g. at the corner regions only, and provided by tapering projections (36, Figs. 5 and 6). A gasket 21 or a layer of an elastomer-type adhesive may be interposed between the tube plate and the header box.
Patent GB-363308-A (GB)
Title: Rectifier arrangement for alternating current measurements
IPC: G01L1/12
Filed: 1930-09-10
Abstract: 363,308. Resistance, inductance, and capacitance measurements. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Sept. 10, 1930, No. 27065. Convention date, Sept. 11, 1929. [Class 37.] Rectifiers having a substantially straight, characteristic are arranged in a bridge which is supplied with the potential to be measured and with a synchronous auxiliary potential large compared with the measuring potential, so that the indication is independent of the magnitude of the auxiliary potential. Dry rectifiers D1, D2 are arranged to form two arms of a bridge having fixed resistances Ra1, Ra2 in its other arms, a resistance r with a variable contact being provided for equalization. The measuring bridge, comprising three resistances R and the resistance Rx to be measured, is supplied with an alternating potential Es across one diagonal, the other diagonal being connected through a transformer so that the out-of-balance potential Eb is applied to one diagonal of the rectifier bridge. The other diagonal of this bridge contains a directcurrent galvanometer G. The rectifier bridge is also supplied with an auxiliary potential synchronous with the measuring potential, for example derived from the same source through a transformer U and phase-adjusting network P. By adjusting the phase -difference between the auxiliary and measuring voltages, the ohmic, capacitative, or inductive component of the impedance Rx may be separately measured. The transformers may be replaced by resistances or other coupling elements. The galvanometer G may be replaced by a relay which may balance the bridge automatically either directly or indirectly, for instance by maintaining a definite acid concentration in a liquid.
Patent GB-726675-A (GB)
Title: Improvements in or relating to the purification of aromatic acids
IPC: C07C51/42
Filed: 1952-10-28
Abstract: Purified aromatic acids, especially those obtained as amides by the action of ammonium sulphate and water-soluble sulphides on m-and p-xylenes &c. are obtained from the corresponding amides by digesting with an aqueous inorganic hydrolyst, filtering, digesting the filter-cake with water at 300 DEG  F. to the critical temperature under superatmospheric pressure sufficient to maintain the water in liquid phase, filtering, colling the filtrate and again filtering. In examples, products of oxidation of a mixture of xylenes with ammonium sulphate and H2S, are treated with sulphuric acid, filtered, washed, heated under pressure with water, filtered and dried; a mixture of ammonium salts and amides of iso- and terephthalic acids, and products of the reaction of p-xylene or 1 : 3-dimethyl-5-tertiary-butyl benzene with ammonium sulphate and hydrogen sulphide, or sulphur and ammonia, are treated with sulphuric acid or caustic soda, followed by water under pressure as described and give products containing much less nitrogen than before purifying; other products which may be similarly purified include the reaction products from the oxidation of m- and p-toluic acids and dimethyl - tertiary - butyl benzenes by the methods described.  The hydrolyst may be a strong mineral acid or alkali or alkaline earth hydroxide.
Patent GB-827907-A (GB)
Title: Method of producing a sheet metal packet
IPC: B32B15/08
Filed: 1957-08-28
Abstract: 827,907. Making transformer cases; jointing. MASCHINENFABRIK OERLIKON. Aug. 28, 1957 [Nov. 12, 1956], No. 27154/57. Classes 83 (2) and 83 (4). [Also in Group XXXV] A method of producing a sheet-metal packet for transformers and electric machinery, said packet consisting of a stack of individual insulated metal sheets bonded together by an adhesive is characterized in that at least one of the stacked faces A, B of the packet, the sheets 1 of which are held together by clamping means, e.g. bolts 3 and cross-limbs 2, is coated with a resin mixture adhesive so that the resin will of its own accord penetrate between the plates as a result of gravity and capillary action, and that after the stack has been thus impregnated the full clamping pressure is re-applied and the assembly dried. In an embodiment wherein the yokes 11, 1<SP>11</SP> and core plates of a transformer are tenoned together, the packet of plates is tipped approximately 30 degrees and the resin adhesive coating is applied only to the sides C of the packet (Fig. 4) thus preventing adhesion of the upper yoke 1<SP>1</SP> to the plates and enabling the upper yoke to be dismantled if desired.
Patent GB-369152-A (GB)
Title: Bottle with pipette-stopper
IPC: B01L3/02
Filed: 1931-09-30
Abstract: 369,152. Bottles. STERNVERSCHLUSSE G E S . , 61, Potsdamerstrasse, Berlin. Sept. 30, 1931, No. 27235. Convention date, Feb. 7. [Class 125 (i).] In a bottle with a pipette stopper and suction cap, the pipette 3 is combined with a closure 2 which carries the suction cap 9. The pipette and closure member are composed of a pressed or cast material such as synthetic resin, and may be in one piece, or the pipette may be of glass and embedded in the closure.